The reliance on gravity ensured that no energy was required to supply water to the shrimp ponds, which also connected with the main waterway or water canal through short water canals, also at a gradient downstream. With a volume of cubic kilometers, Lake Volta is the world’s third largest man-made lake by volume, the largest being Lake Kariba which is located between Zimbabwe and Zambia in Southern Africa and contains cubic kilometers of water. WaterAid are trying to invest in pumps to correct this major problem, and you can find out how here. Transmission occurs in the lake itself. The major health problem that arose as a result of the creation of the dam was the increased prevalence rate or proliferation of schistosomiasis in communities spanning the newly created lake and in the Lower Basin.

The video on the right gives an idea of what Ghana is like, write down as many features as possible. Shrimp stocking ponds were dug along a gradient on the banks of the river. This would have helped to avoid a split into two camps: By using this site, you agree to the Terms of Use and Privacy Policy. Ghana also has a varied climate, with Tropical forests in the South West were the South Westerly prevailing wind brings lots of rainfall to this region. This method was moderately successful and contributed to some improvement in the river flow rate.

Van Edig and P. Spatial Planning in Coastal Regions: The disease was endemic in Ghana long before the creation of the Volta Lake; but endemicity was low along the Volta River. The main channel connecting the various shrimp ponds opens up at an angle of to the longitudinal axis of the srudy of the stidy. Van De Giesen, N. Hiba Khan Civil Engineer. The weeds provide the necessary habitat for black-fly, mosquitoes and snails, which are the vectors of water-borne illnesses such as bilharziariver blindness and malaria.

It is slightly drier in the South East, where savannah vegetation dominates rather than the tropical forests of the West. By using this site, you agree to the Terms of Use and Privacy Policy.

As is often common when building rockfill dams, materials dug up — in this case quartzite, a kind of sandstone – were used to construct the scheme.

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Ghana has also borrowed a lot of money, and rising debt repayments are difficult for the country to deal with. Jackson took into account the economic, financial, and technical feasibility of the project along with the socio-cultural and public health implications.

More than half the studt who head households in rural areas are among the poorest 20 per cent of the population.

It became quite evident that the non-engineering aspects of the project did not receive the necessary full attention. An invasion of the river’s main course by aquatic life led to a corresponding reduction of navigable space both upstream and downstream.

The implementation process involved various components with entirely different methodologies and reflects the multi-faceted nature of the impacts of the dam on the environment.

Likewise, the rural and industrial economies have experienced the financial losses associated with the decimation of river aquaculture. This also resulted in a reduction of the harvest resulting in annual production far below the existing demand.

The loss of income as a result of the collapse of the rural economies brought about very intense poverty among the inhabitants of these communities and triggered the following events in the riparian communities spanning both banks of the downstream area.

The project had some negative environmental effects – the Volta Lake is now a habitat for disease-carrying insects such as black flies and mosquitoes. The most serious constraint of the remediation project has been the general apathy of the local people towards a progressive attitudinal and behavioural change. Akosombo Dam CivilEngineer, Maria Gkouma, tells us about the Akosombo Dam which was first conceived by geologists in as a way to provide electricity. Challenges the project team faced included the difficulties of excavating extremely hard ground in the area.

Public education and provision of sanitary facilities were used to maximise avoidance of the risk of infection in the vulnerable group. Changes in natural processes, such as a reduction in the flow of the river, resulted in an invasion of aquatic weeds, creation of conditions promoting the density of aquatic snails, silting and closure of the estuary, as well as other more subtle effects.

Akosombo Dam | Institution of Civil Engineers

The map below shows a clear trend, the North of Ghana has serious problems with poverty. Massive output of hydroelectric power; Enhanced fishing and water transportation upstream; and, Improved opportunities for irrigated farming, especially in the lower reaches, and their attendant multiplier economic effects.

Source Indeed, although there has been an overall decline in poverty in Ghana, poverty still has stuyd firm grip on rural areas, especially in the north.

Find Out More Attempt this climate graphing adm Watch Video 1 and write down as many key features of Ghana as possible What does video 2 show about life in Northern Ghana? Photograph author Allison Stillwell from Wikipedia.

People from different villages — many of whom were subsistence farmers – were moved into 52 resettlement villages as part of the scheme. Blessing Danha Civil Engineer. It could not be counted as a complete success because, when left on their own, the local people could not sustain the various project components. Ghana is a large Country in West Africa that is home to over 23 million people with a population that is growing.

Valco benefitted from exemptions from government tax and got a guarantee of cheap electricity for 50 years. They ran perpendicular to the main waterway. The methods, however, were somewhat labour-intensive at the initial stages.